Because riboflavin is a water-soluble vitamin, leftover amounts leave the body through the urine. There is no known poisoning from riboflavin.

Recommendations

The Recommended Dietary Allowance (RDA) for vitamins reflects how much of each vitamin most people should get each day. The RDA for vitamins may be used to help create each person's goal.

How much of each vitamin you need depends on your age and gender. Other factors, such as pregnancy and illnesses, are also important. Women who are pregnant or breast-feeding need higher amounts. Ask your health care provider which amount is best for you

Dietary Reference Intakes for riboflavin (vitamin B2):

Infants

0 - 6 months: 0.3* milligrams per day (mg/day)

7 - 12 months: 0.4* mg/day

*Adequate Intake (AI)

Children

1 - 3 years: 0.5 mg/day

4 - 8 years: 0.6 mg/day

9 - 13 years: 0.9 mg/day

Adolescents and Adults

Males age 14 and older: 1.3 mg/day

Females age 14 to 18 years: 1.0 mg/day

Females age 19 and older: 1.1 mg/day

The best way to get the daily requirement of essential vitamins is to eat a balanced diet that contains a variety of foods.